Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Worldmarks: Countries Visited
Track every country you've visited and plan your next adventure — all on a beautiful interactive 3D globe.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Track every country you've visited and plan your next adventure — all on a beautiful interactive 3D globe. YOUR SCRATCH MAP, ON A GLOBE Spin a stunning 3D globe and see every country you've visited highlighted in color. Switch between globe and flat map views, or explore satellite imagery. Works offline too — your globe is always with you. MARK ALL 197 COUNTRIES Tap any country to mark it as visited or add it to your bucket list. Create custom markers with your own colors and icons to organize your travels your way. TRACK YOUR TRIPS Create trip albums with photos and notes. Drop photos and the app automatically detects which country they were taken in. Watch your memories appear as pins on the globe. BEAUTIFUL STATISTICS See your world progress at a glance — percentage visited, breakdown by continent, and detailed stats for every region. Export your map as a beautiful image to share. PRIVACY FIRST No account required. No phone number. No sign-up. Your data stays on your device with optional iCloud sync across your Apple devices. We never see your data. ONE PURCHASE, EVERYTHING UNLOCKED Pay once and the whole app is yours — all 197 countries, every feature, every future update. No subscriptions, no ads, no in-app purchases. Yours forever. EVERYTHING INCLUDED: - Interactive 3D globe and flat map - All 197 countries, no limits - Unlimited trip albums with photos - Detailed statistics by continent - Export your map as an image - Custom markers with colors and icons ONE PRICE, NO EXTRAS: - Offline globe mode - iCloud sync across your devices - No subscriptions - No ads or in-app purchases - No account, no sign-up - All future updates included
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
